dana. >> that's right, john. i am actually inside one of the key places that we will see a lot of the events. in fact, the vips will be walking. i'm in the capitol rotunda. this is one of the places where we will see a lot of the preparations take place behind t the scenes. no, that's not the president. it's a standin. this is the kind of exhaustive prep going on to make sure there are no mistakes. not just for the president. chuck schumer is the event's emcee. >> i don't want to do what chief justice roberts did. he's a brilliant man, sxhesed up. >> reporter: roberts messed up the oath four years ago. >> faithfully the office of the president of the united states. >> the office of the president of the united states faithfully. >> reporter: he had to go over to the white house for a do over. what are you afraid of messing up? >> not getting up at the right time. >> reporter: schumer has been preparing for the day for more than a year. >> it's always done in a bipartisan way. >> reporter: central focus? try to avo